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So, for example, to run a program withĬom.uitbat (and any subpackages), theįollowing command could be used: java -ea. These switches, they are processed in order before loadingĪny classes. If a single command line contains multiple instances of With oneĪrgument not ending in ".", the switch enables
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Unnamed package in the current working directory. Simply ".", the switch enables assertions in the ".", the switch enables assertions in the With no arguments, enableassertions or -eaĮnables assertions. Separate switch is provided to enable asserts in all systemĬlasses see -disablesystemassertions below. This makes it easy to turn onĪsserts in all classes except for system classes. To this rule: in their no-argument form, the switches do da: Īpply to all class loaders and to system classes To run a program with assertions enabled in packageĬom.uitbat but disabled in classĬom., the following One argument not ending in ".", the switchĭisables assertions in the specified class. The unnamed package in the current working directory. Simply ".", the switch disables assertions in ".", the switch disables assertions in the That contains spaces, you must enclose the string in double For example by invokingįor more information on class paths, see Setting the Class Path. Unexpanded wildcards except by querying the environment. Java virtual machine is started - no Java program will ever see Any classpath wildcard expansion occurs before the The CLASSPATH environment variable, where defined, A classpath entryĬonsisting simply of * expands to a list of all the jar files in theĬurrent directory. All jar files in the specifiedĭirectory, even hidden ones, are included in the list. JAR (a java programĬannot tell the difference between the two invocations).įor example, if directory foo contains a.jar and b.JAR, then theĬlass path element foo/* is expanded to a A.jar:b.JAR, except that Is considered equivalent to specifying a list of all theįiles in the directory with the extension. classpath or -cp overrides any setting ofĬLASSPATH is not set, the user class path consistsĪs a special convenience, a class path element containing a basename of * Specify a list of directories, JAR archives, and ZIPĪrchives to search for class files.
WINDOWS JAR LAUNCHER FULL
agentpath: pathname Load a native agent library by full pathname. This is subject to change in a futureįor more information, see JVMTI Agent Command Only the Java HotSpot Server VM is supported so the -server A 64-bit capable jdkĬurrently ignores this option and instead uses the Javaįor default VM selection, see Server-Class Machine InĪddition, the default Java HotSpot VMs provide a set of Options that are supported on the current runtimeĮnvironment and will be supported in future releases. The javaw launcher will, however, display a dialog box with error information if a launch fails for some reason.
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Use javaw when you don't want a command prompt window to appear. The javaw command is identical to java, except that with javaw there is no associated console window. Non-option arguments after the class name or JAR file name are passed to the main function. The Java runtime searches for the startup class, and other classes used, in three sets of locations: the bootstrap class path, the installed extensions, and the user class path.
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WINDOWS JAR LAUNCHER ARCHIVE
If the -jar option is specified, the first non-option argument is the name of a JAR archive containing class and resource f iles for the application, with the startup class indicated by the Main-Class manifest header. A fully-qualified class name should be used. The method declaration must look like the following: public static void main(String args)īy default, the first non-option argument is the name of the class to be invoked. The method must be declared public and static, it must not return any value, and it must accept a String array as a parameter. It does this by starting a Java runtime environment, loading a specified class, and invoking that class's main method. The java tool launches a Java application. argument Argument passed to the main function. file.jar Name of the jar file to be invoked.